A kind of refractory material for the end cover of centrifugal large bar roll and the manufacturing method of the end cover
A manufacturing method and roll technology, which is applied in the field of refractory materials for the end caps of centrifugal large bar rolls, can solve the problems of insufficient high temperature resistance strength and thermal shock resistance, insufficient adhesion between the refractory cement layer and the end cap, and easy occurrence of refractory cement layers Wear and other problems, to achieve the effect of good thermal shock stability, small expansion coefficient, and good bonding performance
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Embodiment 1
[0023] A refractory material for the end cover of a centrifugal large-scale bar roll, comprising the following components in terms of mass percentage: 25% bauxite, 10% zircon powder, 15% high alumina cement, 40% silica powder, and 10% water %; wherein, the bauxite is composed of the following component proportions: the bauxite with a particle size of 3-8mm accounts for 10%, and the bauxite with a particle size of 1-3mm accounts for 15%; the particle size of the zircon powder 100-150 mesh, and the particle size of the silica powder is 10-15 μm.
[0024] The manufacturing method of the roll end cover with the above-mentioned refractory material is as follows:
[0025] (1) First, add 30% of total water to bauxite with a particle size of 3-8mm and water at a temperature of 55°C to make slurry, and then spread the slurry evenly on the surface of the roll end cover to check the surface smoothness, so that no Flatness≤5mm;
[0026] (2) Fully mix zircon powder, silica powder and hig...
Embodiment 2
[0032]A refractory material for the end cover of a centrifugal large-scale bar roll, comprising the following components in terms of mass percentage: 35% of bauxite, 8% of zircon powder, 12% of high alumina cement, 45% of silica powder, and 5% of water %; wherein, the bauxite is composed of the following component proportions: the bauxite with a particle size of 3-8mm accounts for 15%, and the bauxite with a particle size of 1-3mm accounts for 20%; the particle size of the zircon powder 100-150 mesh, and the particle size of the silica powder is 10-15 μm.
[0033] The manufacturing method of the roll end cover with the above-mentioned refractory material is as follows:
[0034] (1) First, add 40% of the total water to the bauxite with a particle size of 3-8mm and water at a temperature of 60°C to make slurry, and then spread the slurry evenly on the surface of the roll end cover to check the surface smoothness, so that no Flatness≤5mm;
[0035] (2) Fully mix zircon powder, s...
Embodiment 3
[0041] A refractory material for the end cover of a centrifugal large-scale bar roll, comprising the following components by mass percentage: 30% of bauxite, 10% of zircon powder, 14% of high alumina cement, 38% of silica powder, and 8% of water %; wherein, the bauxite is composed of the following component proportions: the bauxite with a particle size of 3-8mm accounts for 12%, and the bauxite with a particle size of 1-3mm accounts for 18%; the particle size of the zircon powder 100-150 mesh, and the particle size of the silica powder is 10-15 μm.
[0042] The manufacturing method of the roll end cover with the above-mentioned refractory material is as follows:
[0043] (1) Add 35% total water and 58°C water to the bauxite with a particle size of 3-8mm to make slurry, and then spread the slurry evenly on the surface of the roll end cover to check the surface evenness. Flatness≤5mm;
[0044] (2) Fully mix zircon powder, silica powder and high alumina cement, add water with a...
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